The contact owns a 2019 Ford F-250. The contact stated that while driving on the highway at various speeds, the message (Reduced Power) was displayed, the vehicle decelerated to 50 MPH and the check engine warning light remained illuminated. The vehicle was taken to a local dealer where the vehicle was diagnosed, and the contact was informed that the fuel system was faulty and needed to be replaced. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 24V957000 (FUEL SYSTEM, DIESEL) as the probable cause for the failure. The manufacturer was not made aware of the failure. The approximate failure mileage was 170,000.